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发明名称
Устройство для улавливания воды при проходке и креплении стволов шахт
摘要
申请公布号
SU79460(A1)
申请公布日期
1948.11.30
申请号
SU19470352587
申请日期
1947.02.08
申请人
KORZHUK L.N.
发明人
KORZHUK L.N.
分类号
E21D1/00
主分类号
E21D1/00
代理机构
代理人
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